If PQR is an equilate... - Ellipse

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Q.) If PQR is an equilateral triangle inscribed in the auxiliary circle of the ellipse x²/a² + y²/b² = 1 (a > b) and P'Q'R' is the corresponding triangle inscribed within the ellipse then centroid of the triangle P'Q'R' lies at

[A]centre of ellipse

[B]focus of ellipse

[C]between focus and centre on major axis

[D]none of these

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